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Dionex PDA Operator's Manual
If the lamp intensity reading is below 10 million counts for a standard or
semi-preparative cell or below 3 million counts for a semi-micro cell,
follow these steps:
•
Filter paddle has malfunctioned
Check the Chromeleon Audit Trail. If the "Filter wheel sensor could not
detect blocked position." or "Filter wheel sensor could not detect open
position." message is displayed, see
•
Failure of an electronics component
Turn off the Dionex PDA power and contact Thermo Fisher Scientific for
assistance.
NOTE Do not attempt to service the Dionex PDA electronics
4.8
Wavelength Calibration Fails
•
Deuterium lamp may be defective
If the
DEUTERIUM – UV
replace the deuterium lamp (see
If the
DEUTERIUM – UV
PDA Wellness panel and run the wavelength calibration and the wavelength
verification test (see
procedures, remove the flow cell from the detector and repeat both
80
f.
Reinstall the cell in the optical bench.
g. Autozero the detector again to verify that the problem has been
resolved. If the error message appears again, contact Thermo
Fisher Scientific for assistance.
a. Check that the flange of the deuterium lamp is aligned with the
two locating pins in the optical bench (see
flange is aligned, the lamp is defective and should be replaced
(see
Section
5.7).
b. If the error message appears again, contact Thermo Fisher
Scientific for assistance.
components. All repairs of the electronics components
must be performed by Thermo Fisher Scientific
personnel.
LED is flashing rapidly—or if the LED fails to light—
LED is lighted but is not flashing, open the Dionex
Section
page 66
for instructions.
Section
5.7).
4.14.2). If the Dionex PDA fails these
Section
5.3). If the
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